Introduction
Today, there are many dangerous profession in our lives. The most dangerous is the rescue workers, firefighters, steelworkers, military and so on. One of the main means of protection from the dangerous environment is protective clothing and additional protective devices (eg balloons with compressed air, steel plates, and so on). All this leads to a complication of doing the task, but necessary for the save health or life. Significantly improve the protection of special clothing is the using of modern electronic systems.
The uniform of firefighters has been chosen as a sample. In fact, the incidence of temporary disability of firefighters is 5 times higher than that of their colleagues who work with similar chemicals on the open soil, and 10 times higher than in people who do not come into contact with fire or smoke.
We offer modern electronic controls of vital functions of the human body integrated in clothing (in under and above local area of uniform). The essence of this proposal is that sensors of various types are mounted into the clothing which fix important indicators of internal and external surroundings, such as temperature, humidity, duration of stay, sensors of chemically hazardous substances, and so on. Modern developments in the field of microcontrollers’ technologies allow to process the data with high speed and efficiency, besides, they are easily mounted into portable systems of various types. It is especially necessary to mention the widespread introduction of wireless admission-transmission systems that can significantly improve the efficiency of the so-called "smart clothes". Thus, in case of critical situations the microcontroller having analyzed the information from the sensors embedded in the worker’s clothes by special means of signaling (warning sound or indicative ones, for example will report on the danger of the worker’s state to the controlling remote station, making the occurrence of a critical situation for the health or life of a man impossible).
Implementation
Portable monitoring system for“smart clothes was designed to be fix in clothes and wear comfortably The system consist of main module(device and sensors which connected with module through flexible wires The measuring system consists of pressure sensors(CP 0152 sensors 4pcs and deformation(loading sensors and two combined temperature-humidity-pressure sensors Because sensors are resistive and strain gauge ones for their approval the bridge switching circuit is used The sensors are divided into two groups and powered from digital-to-analog converters(DAC This allows to adjust their sensitivity within a very wide range The signal from each bridge reaches the input of the analog-to-digital converter(ADC The digital code that is responsible for the amount of strain(deformation and pressure is supplied to the input of TI MSP430F5529LP microcontroller(I want to replace it with MSP-EXP432P401RMSP-EXP432P401R and after pre-processing by Wireless technology to the host computer The reading speed of measurement results changes with the use of the control program and can be within the range of 0-100 measurements per second for one channel
Two combined temperature-humidity-pressure sensors (Bosch BME280), one of which is under the clothes and the other - outside, allow measuring the microclimatic conditions under the object of study, and controlling the air microcirculation. I2C interface was used to communicate with main board for these sensors. CC3100BP modules organize wireless communication of measuring system. This module give us possibility to send data to any suitable receiver. With this module, we can build truly functional low-power wireless solution. CC3100BP and MSP430F5529LP microcontrollers are connected through SPI. Device is powered by TI BOOSTXL-BATPAKMKII.
Existing project
Software
The main part of measurement system control software was written in Energia MT v.0101E0017. For input data from Bosch BME 280 sensors, we using cactus_io_BME280_I2C library. Reading data from the analog inputs was realized through standard Energiaanalogreadfunction. For communication with hardware (BME280 and CC3100BP) Energia Wire and SPI libraries was used. CC3100 was switched to Access Point mode and Web server on port 80 was started. Monitoring data transmitted to USB-Serial virtual COM port for debugging purposes.
What we want to do
There are plans to add more sensors(infrared temperature sensor accelerometer and gyroscope(for the detection of an explosion or a fall from a height magnetometer(to detect hazardous magnetic fields GPS different type of danger GAS pulse meter and blood oxygen saturation sensor get possibility data storage on microSD card(black-box function Also there are plans to display information on surface of clothes(OLED display and create special software for receiver side and more impressive data presentation on Web-page It give possibility for user to see main parameters and states of internal and outdoor environments I plan to use a new type of powering because typical source(as rule chemical type very depend on temperature humidity and number of cycles of charging Therefore I considered alternative type source such are piezoelectric thermoelectric and biomechanical energy and their combination(very fit the BQ25570EVM-206BQ25570EVM-206 module
In case of danger (high temperature, explosion, fall from a height, a strong decrease or increase in heart rate, a decrease in oxygen level in the blood, smoke, etc.), the system issues a warning to the user, and transmits warning information to a remote monitoring station, together with user coordinates.
Acceleration sensors and pressure sensors, which can capture the explosion or falling from a height, may automatically include personal safety cushion built into the clothes (in areas most at risk, such as the neck).
Simultaneous operation of the "fall" sensor and reduction of the oxygen level in the blood can indicate heart problems. If we connect the mobile ECG system (for example based on TI ADS129x), it is very useful for the care of elderly people living alone.
It may seem that we want to grasp the immensity. But this is not the case. A large number of different sensors (which today are not at all expensive) allow in the future adding to the finished system not previously available options. A good example of this concept - using a mobile phone magnetometer as a metal detector, or using proximity sensor as a heart rate sensor.
Ideally, the system should be placed in a small box on the user's belt and sensors mounted on an elastic strap on the chest.
New modified project
My project is almost ready, I like to expand and modernize it due to optional equipment and more powerful microcontroller.
To implement the missing functionality, additional modules were purchased.
About the results I will be reported in my blog!
Thank you all for your attention!
P.S. Sorry for the mistakes, but this is my first project on element 14!
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